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Moroso 63500 Small Block Chevy Aluminum Short Water Pump

Specs
Material Type:
Aluminum
Weight:
5.10
Sold in Quantity:
Each
Finish:
Natural
Shaft Diameter:
0.63
Mounted Length:
5.63
Shaft Length:
0.38
Hose ID:
1.83
Gasket(s) Included:
No
MFG. Part #:
63500
Garage Sale:
No
Water Pump Style:
Short
Notes
Clearance from back of pump to engine block mount is .81" Mounting hole boss height: Passenger Lower: 2", Passenger Upper: 1-1/8", Driver Upper: 7/8", Driver Lower: 1-1/8".
Moroso 63500 Small Block Chevy Aluminum Short Water Pump
Moroso 63500 Small Block Chevy Aluminum Short Water Pump

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Moroso 63500 Small Block Chevy Aluminum Short Water Pump

Details

Reviews

Q & A

What's in the Box

Moroso first pioneered the aluminum water pump for racing over 15 years ago. Over the years, continual improvements have resulted in providing the best cooling system components available for competition use.

  • Computer designed housing cast from 356-T6 aluminum
  • Lightweight impeller maintains consistent coolant temp throughout the water jacket
  • Low-drag impeller adds 14HP @ 7,500 RPM 
  • Includes integral cam stop boss
  • Overall length of 5.603" from rear mounting face to hub face  

Fits 1955-1968 “Short” design 5/8" shaft S/B Chevy appliactions. Note: Pump will not clear a billet 910-11040 timing cover.

545-63500 Instructions (PDF)

Learn how to choose the correct water pump for your application by reading our tech article.  SBC - Short vs Long Water Pump.    

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Speedway's adjustable water pump is tried, tested and true. It has great flow, superior quality and standard features that are typically only available on water pumps costing twice as much. State-of-the-art aluminum casting and a precision impeller provide equal flow to both cylinder banks. If you're using a cog belt on your race car, this is the pump you want since it's adjustable. The 1/2" mount holes in this pump are larger than normal, allowing it to be moved up or down slightly to help with belt tension.

  • Adjustable mounting holes
  • High flow and pressure rates
  • Adjustable cam stop
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  • 3/4" inch heavy duty bearing
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Uses new, OEM cast iron castings precision machined and assembled by Stewart Components to their exacting standards. They feature higher flow and pressure for better cooling. They have a 3/4" bearing and 5/8" shaft. 

  • Castings are internally modified for performance and reliability 
  • Compatible with stock lines and brackets
  • Precision ground hub for perfect pully alignment
  • Equal flow to left and right cylinder heads 
  • Recommended for stock, OEM, or mild performance applications 
  • One year warranty

Note: If using a mechanical fan, we suggest using a 3/4" shaft water pump.

Learn how to choose the correct water pump for your application by reading our tech article.  SBC - Short vs Long Water Pump.   

Stewart Components 32203 Stage 3 Small Block Chevy Water Pump, Short
                        

These pumps are assembled with 356-T6 heat treated aluminum castings. Precision CNC machined components. The fan hubs are 1/2" thick and machined from billet steel. These pumps are preferred by many top engine builders for higher RPM applications.

These Stage 3 water pumps feature 1/2" thick steel fan hub with set screw for positive positioning and 356-T6 heat treated aluminum casting. The S/B Chevy pump has an extra rigid cam stop with a 3/8" adjusting screw. The extra material adjacent to the block mounting bolts allows drilling and tapping up to 1/2" NPT holes for external cooling lines on S/B Chevy. There is higher flow and pressure for better cooling as well as equal flow to right and left cylinder heads. The 3/4" bearings offer 5 times the strength of standard bearings. Precision impeller installed to exacting tolerances. One year manufacturers warranty.

910-155 Instructions (PDF)

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910-15581 Instructions (PDF)

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Small Block Chevy Water Pump Gasket
                        

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  • Paper
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Red Line 80204 Water Wetter Coolant Additive
                        

Red Line Water Wetter Super Coolant additive is a unique wetting agent which reduces coolant temperatures by as much as 20° F. This is a liquid coolant treatment product which is designed to be added to solutions of antifreeze and water to help improve the heat transfer properties of glycol-based antifreeze. This liquid product can be used to provide rust and corrosion protection in plain water for racing engines, which provides much better heat transfer properties than glycol-based antifreeze. Improves the ability of coolant to wet heat transfer surfaces by 50%.

  • Reduces or eliminates bubbles that form on hot metal surfaces to reduce coolant temperatures by up to 20°
  • Superior heat transfer properties compared to glycol-based antifreeze
  • Compatible with new or used antifreeze (including DEX-COOL and long-life versions) to improve the heat transfer of ethylene and propylene glycol systems
  • Improves heat transfer and reduces cylinder head temperature
  • Designed for use with all modern aluminum, cast iron, copper, brass and bronze cooling systems
  • Cleans and lubricates water pump seals
  • Reduces cavitation and complexes with hard water to reduce scaling
  • Does not lower cooling system below the thermostatically-controlled temperature
  • 12 fl. oz. bottle treats 12-20 quarts

Water Wetter Tech Info (PDF)

Learn more about how cooling systems work with proper coolant mixture and additives by reading our tech article. Cooling System Principles.   

AFCO 100002 High Performance Coolant Additive - 16 oz.
                        
AFCO's specially formulated High Performance Coolant Additive is race tested and proven to lower operating temperatures. It is safe for hoses and water pump seals as well as protect against rust, corrosion, and foaming. Lasts up to 12 months.
  • Specially formulated
  • Race tested and proven
  • Lowers operating temperatures
  • Protects against rust, corrosion, and foaming
  • Safe for hoses and water pump seals
  • Lasts for up to 12 months

Learn more about how cooling systems work and proper coolant mixture by reading our tech article. Cooling System Principles.